FIRST INTERNATIONAL COMPUTER, INC.
486VC-H (REV. A1)
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
16/20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
VT |
|
Max. Onboard DRAM |
128MB |
|
SRAM Cache |
64/128/256KB |
|
BIOS |
Award |
|
Dimensions |
289.8mm x 218.4mm |
|
I/O Options |
None |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo LED |
J6 |
Speaker |
J9 |
|
Turbo switch |
J7 |
Power LED & keylock |
J10 |
|
Reset switch |
J8 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
CMOS memory normal operation |
J1 |
open | |
|
CMOS memory clear |
J1 |
closed | |
|
Monitor type select monochrome |
J2 |
open | |
|
Monitor type select color |
J2 |
closed | |
|
CPU speed select OSC1/1 |
JK1 & JK2 |
pins 2 & 3 closed | |
|
CPU speed select OSC1/2 |
JK1 & JK2 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(4) 256K x 9 |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
|
5MB |
(4) 1M x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
17MB |
(4) 256K x 9 |
(4) 4M x 9 |
|
17MB |
(4) 4M x 9 |
(4) 256K x 9 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
NONE |
|
65MB |
(4) 16M x 9 |
(4) 256K x 9 |
|
68MB |
(4) 16M x 9 |
(4) 4M x 9 |
|
80MB |
(4) 16M x 9 |
(4) 4M x 9 |
|
128MB |
(4) 16M x 9 |
(4) 16M x 9 |
|
SRAM CONFIGURATION | |||||
|
Size |
Cache SRAM |
Location |
TAG/Dirty Bit |
JS1 |
JS2 |
|
64KB |
(8) 8K x 8 |
Banks 0 & 1 |
(2) 8K x 8 |
pins 1 & 2 |
pins 1 & 2 |
|
128KB |
(4) 32K x 8 |
Bank 0 |
(2) 8K x 8 |
pins 1 & 2 |
pins 2 & 3 |
|
256KB |
(8) 32K x 8 |
Banks 0 & 1 |
(2) 32K x 8 |
pins 2 & 3 |
pins 2 & 3 |
|
Note:Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION | |||
|
CPU Type |
JC1 |
JC2 |
JC3 |
|
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
80486DX |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
80487SX |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
80486SX |
pins 2 & 3 closed |
pins 2 & 3 closed |
open |